Non-rectangular Display DC Voltage Line Shielding
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Solution Overview
Problem
In non-rectangular display panels, such as circular displays, parasitic capacitance between gate and data lines can cause signal interference due to the proximity of these lines, which is exacerbated by the limited bezel area and reduced space for the driver IC, affecting the display's functionality.
Innovation Solution
The arrangement of DC voltage lines between data and gate lines in a specific pattern, known as the 'flip arrangement', reduces parasitic capacitance by positioning the DC voltage lines between the data and gate lines, preventing signal interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If gate and data lines are arranged parallel to each other in a non-rectangular display panel, then the display area can be maximized, but parasitic capacitance coupling occurs between the lines causing signal interference
Solution Approach 1:
A ground line is introduced as an intermediary element positioned between the gate line and data line. This ground line acts as a shield that electrically isolates the two signal lines, preventing parasitic capacitance coupling while allowing the lines to maintain their parallel arrangement for maximum display area utilization
2Area of moving object
If the bezel area is made narrower to maximize display area, then the display area increases, but the area available for positioning the driver IC is reduced
Solution Approach 1:
The signal line arrangement is designed to accommodate driver IC placement in alternative locations along the panel edges. By optimizing the routing pattern and utilizing available edge spaces in non-rectangular geometries, the driver IC can be positioned without requiring excessive bezel width, thus preserving maximum display area
3Reliability
If DC voltage lines are positioned close to gate and data lines to reduce interference, then signal stability improves, but parasitic capacitance increases
Solution Approach 1:
The ground line serves as a protective intermediary that enables DC voltage lines to be positioned closer to signal lines for better shielding效果, while the ground line itself absorbs the parasitic capacitance effect, preventing it from coupling between functional signal lines
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution effectively minimizes signal distortion by eliminating parasitic capacitance between gate and data lines, ensuring stable signal transmission and improved display performance in non-rectangular shapes.
Implementation Method 1
parasitic capacitance between gate and data lines can cause signal interference
Data Source
AI summary
A non-rectangular display includes: a plurality of first signal lines extending along a first direction; a plurality of DC voltage lines extending along the first direction; and a plurality of second signal lines extending along the first direction, wherein a first DC voltage line of the plurality of DC voltage lines is between a first line of the plurality of first signal lines and a second line of the plurality of second signal lines, a second DC voltage line of the plurality of DC voltage lines is between a third line of the plurality of first signal lines and a fourth line of the plurality of second signal lines, and the first and third lines are adjacent to each other, or the second and fourth lines are adjacent to each other.